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How the sections are chained together | Presentation Title | Presenter Name | Date | Subject | Business Use Only7 pages  ItemGroupDef has ItemRef for variables like VSORRES  ItemDef for VSORRES has a def:ValueListRef pointing to a def:ValueListDef  def:ValueListDef has ItemRefs for values of VSORRES (like DIABP) in each ItemRef, there’s a def:WhereClauseRef  def:WhereClauseDef has logic like: if VSTESTCD eq “DIABP”